[config] Build conf/service, added user/group name config

systemd service and config files populated with paths/users
Added user/group override options to configure
Added man ref in service file

.gitignore

@@ -29,6 +29,8 @@ missing
 stamp-h1
 autotools-stamp
 build-stamp
+forked-daapd.conf
+forked-daapd.service
 
 # ignore debian packaging for convenience
 debian/

Makefile.am

@@ -1,6 +1,11 @@
 ACLOCAL_AMFLAGS = -I m4
 
-sysconf_DATA = forked-daapd.conf
+CONF_FILE = forked-daapd.conf
+SYSTEMD_SERVICE_FILE = forked-daapd.service
+
+sysconf_DATA = $(CONF_FILE)
+
+BUILT_SOURCES = $(CONF_FILE) $(SYSTEMD_SERVICE_FILE)
 
 SUBDIRS = sqlext src
 
@@ -17,8 +22,25 @@ nobase_dist_doc_DATA = \
 	scripts/pairinghelper.sh
 
 EXTRA_DIST = \
-	forked-daapd.conf
+	$(CONF_FILE).in \
+	$(SYSTEMD_SERVICE_FILE).in
 
 install-data-hook:
 	$(MKDIR_P) "$(DESTDIR)$(localstatedir)/cache/$(PACKAGE)/libspotify"
 
+CLEANFILES = $(BUILT_SOURCES)
+
+do_subst = sed -e 's|@sbindir[@]|$(sbindir)|g' \
+             -e 's|@localstatedir[@]|$(localstatedir)|g' \
+             -e 's|@PACKAGE[@]|$(PACKAGE)|g' \
+             -e 's|@DAAPD_USER[@]|$(DAAPD_USER)|g'
+
+# these files use $prefix, which is determined at build (not configure) time
+$(CONF_FILE) $(SYSTEMD_SERVICE_FILE): Makefile
+	$(AM_V_at)rm -f $@ $@-t
+	$(AM_V_GEN)$(do_subst) "$(srcdir)/$@.in" > $@-t
+	$(AM_V_at)mv $@-t $@
+
+$(CONF_FILE): $(srcdir)/$(CONF_FILE).in
+
+$(SYSTEMD_SERVICE_FILE): $(srcdir)/$(SYSTEMD_SERVICE_FILE).in

configure.ac

@@ -279,6 +279,23 @@ AS_IF([test "x$enable_mpd" != "xno"], [
 	AC_DEFINE(MPD, 1, [Define to 1 to enable MPD support])
 ])
 AM_CONDITIONAL(COND_MPD, [test "x$enable_mpd" != "xno"])
+
+#
+# Defining users and groups
+#
+AC_ARG_WITH([daapd_user],
+	[AS_HELP_STRING([--with-daapd-user=USER],
+		[User for running forked-daapd (default=daapd)])],
+	[test x"$withval" = xyes && withval=], [withval=])
+DAAPD_USER=${withval:-daapd}
+AC_SUBST(DAAPD_USER)
+
+AC_ARG_WITH([daapd_group],
+	[AS_HELP_STRING([--with-daapd-group=GROUP],
+		[Group for daapd user (default=USER)])],
+	[test x"$withval" = xyes && withval=], [withval=])
+DAAPD_GROUP=${withval:-$DAAPD_USER}
+AC_SUBST(DAAPD_GROUP)
 dnl --- End options ---
 
 dnl Checks for header files.

forked-daapd.conf.in

@@ -11,14 +11,14 @@ general {
 	# Username
 	# Make sure the user has read access to the library directories you set
  	# below, and full access to the databases, log and local audio
-	uid = "daapd"
+	uid = "@DAAPD_USER@"
 
 	# Database location
-#	db_path = "/var/cache/forked-daapd/songs3.db"
+#	db_path = "@localstatedir@/cache/@PACKAGE@/songs3.db"
 
 	# Log file and level
 	# Available levels: fatal, log, warning, info, debug, spam
-	logfile = "/var/log/forked-daapd.log"
+	logfile = "@localstatedir@/log/@PACKAGE@.log"
 	loglevel = log
 
 	# Admin password for the non-existent web interface
@@ -28,7 +28,7 @@ general {
 	ipv6 = yes
 
 	# Location of cache database
-#	cache_path = "/var/cache/forked-daapd/cache.db"
+#	cache_path = "@localstatedir@/cache/@PACKAGE@/cache.db"
 
 	# DAAP requests that take longer than this threshold (in msec) get their
 	# replies cached for next time. Set to 0 to disable caching.
@@ -203,7 +203,7 @@ audio {
 # Spotify settings (only have effect if Spotify enabled - see README/INSTALL)
 spotify {
 	# Directory where user settings should be stored (credentials)
-#	settings_dir = "/var/cache/forked-daapd/libspotify"
+#	settings_dir = "@localstatedir@/cache/@PACKAGE@/libspotify"
 
 	# Cache directory
 #	cache_dir = "/tmp"

forked-daapd.service.in

@@ -1,9 +1,10 @@
 [Unit]
 Description=DAAP/DACP (iTunes), RSP and MPD server, supports AirPlay and Remote
+Documentation=man:forked-daapd(8)
 After=network.target sound.target
 
 [Service]
-ExecStart=/usr/sbin/forked-daapd -f
+ExecStart=@sbindir@/forked-daapd -f
 
 # Restart, but not more than once every 10 minutes
 Restart=on-failure